What Is a Catio?
A catio (cat + patio) is a screened outdoor enclosure that allows indoor cats to experience the outdoors safely. They range from small window boxes to large free-standing structures and can be attached to the house via a cat flap, window, or door.
Catios have grown increasingly popular in the UK as more owners choose to keep cats indoors for safety. They provide a compromise that gives cats outdoor enrichment without the risks of free-roaming.
What Are the Benefits of a Catio?
- Fresh air and sunshine — Essential for vitamin D synthesis and overall wellbeing
- Sensory stimulation — Outdoor sounds, scents, and wildlife watching
- Exercise opportunities — Climbing, jumping, and exploring in a larger space
- Safety — Protection from traffic, predators, toxins, and fights with other cats
- Wildlife protection — Prevents cats from hunting birds and small mammals
- Reduced boredom — A new environment to explore reduces indoor monotony
What Types of Catios Are Available?
Window Box Catios
Small enclosures that mount directly onto a window frame, projecting outward like a bay window. Affordable, easy to install, and suitable for flats.
Lean-To Catios
Larger enclosures that lean against an exterior wall, accessed via a cat flap or window. Good for ground-floor properties with a garden or yard.
Free-Standing Catios
Standalone structures connected to the house by a tunnel or placed independently in the garden. Offer the most space but require more investment.
Balcony Catios
Mesh netting or screening that encloses a balcony. Popular in flats and apartments (check your lease before installing).
How Do You Build a Simple Catio?
- Plan the size and location — Choose a spot near a window or door with good natural light
- Build the frame — Use pressure-treated timber for outdoor durability
- Attach mesh — Use galvanised wire mesh (no larger than 25 mm gaps) or UV-resistant cat netting
- Add a roof — Include a solid or translucent roof section for weather protection
- Install shelves and perches — Give cats vertical climbing options inside the catio
- Add enrichment — Include scratching posts, cat grass, and safe plants
- Create access — Install a cat flap in a window or use a purpose-built tunnel
What Are the Recommended Products?
PawHut Outdoor Cat Enclosure with Shelter
Large walk-in catio with multiple platforms, ramps, and a weatherproof shelter. Fir wood construction. 180 x 88 x 178 cm.
Approximate price: ~£200
Elecwish Outdoor Cat House Enclosure
Compact wooden catio with three tiers and mesh panels. Weather-resistant design. 71 x 39 x 131 cm.
Approximate price: ~£110
ProtectaPet Cat Fence Barrier
Rotating paddle barrier system that prevents cats from climbing over garden fences. Turns your entire garden into a safe cat enclosure.
Approximate price: ~£45 per metre
SureFlap Microchip Cat Flap
Selective entry cat flap that opens only for registered microchips. Ideal for catio access points.
Approximate price: ~£70
What Is the Product Comparison?
| Product | Type | Size | Assembly | Approx. Price |
|---|---|---|---|---|
| PawHut Enclosure | Walk-in catio | 180x88x178 cm | Self-assembly | ~£200 |
| Elecwish Cat House | Compact catio | 71x39x131 cm | Self-assembly | ~£110 |
| ProtectaPet Barrier | Fence barrier | Per metre | DIY/Professional | ~£45/m |
| SureFlap Cat Flap | Access point | N/A | DIY install | ~£70 |
What Is the Key Terms / Glossary?
- Catio: A portmanteau of cat and patio; a secure outdoor enclosure for cats
- Cat-proof fencing: Barrier systems fitted to existing garden fences that prevent cats from climbing over
- Galvanised mesh: Wire mesh coated in zinc to prevent rust, commonly used for outdoor cat enclosures
- Cat flap: A small hinged door set into a wall, window, or door allowing independent cat access
- Microchip cat flap: A cat flap that reads a pet’s microchip and only opens for registered animals
Frequently Asked Questions
Do I need planning permission for a catio in the UK?
Most small catios fall under permitted development and do not require planning permission. However, if you live in a conservation area, listed building, or leasehold property, check with your local council or landlord first.
How much does a catio cost to build?
A simple window box catio can be built for £50-£100 in materials. Pre-made walk-in catios range from £100-£500. Custom-built professional catios can cost £500-£2,000+.
Is a catio safe in winter?
Yes, but provide a weatherproof shelter section, warm bedding, and allow your cat to come back inside freely. Most cats will self-regulate their outdoor time in cold weather.
Can I put a catio on a balcony?
Yes, balcony catios are popular for flat dwellers. Use cat-safe mesh netting to enclose the space. Always check your lease or building regulations first.
How do I stop other cats getting into my catio?
Use a microchip cat flap for the access point. Ensure all mesh joins are secure with no gaps. Add a solid base or bury mesh into the ground to prevent digging under.
Sources & References
- PDSA – Cat Care Advice
- RSPCA – Cat Welfare
- Blue Cross – Cat Advice
- Cats Protection – Help & Advice
- International Cat Care – Cat Advice
You might also enjoy our guide on keeping indoor cats mentally stimulated.
You might also enjoy our guide on preventing obesity in indoor cats.
You might also enjoy our guide on indoor cat grooming routine.
Affiliate Disclosure: This post contains affiliate links. If you make a purchase through these links, we may earn a small commission at no extra cost to you. This helps support PetHub Online and allows us to continue creating helpful content for pet owners.
